Tcl Source Code

2012-12-09  Alexandre Ferrieux  <[email protected]>
	* tests/chan.test: Clean up unwanted eofchar side-effect of
	chan-4.6 leading to a spurious "'" at end of chan.test under
	certain conditions (see [Bug 3389289] and [Bug 3389251]).
	* doc/expr.n: [Bug 3594188] Clarifications about commas.

2012-12-08  Alexandre Ferrieux  <[email protected]>
	* generic/tclIO.c: Fix busyloop at exit under TCL_FINALIZE_ON_EXIT
	when there  are unflushed nonblocking channels.  Thanks Miguel for
	spotting.

2012-12-07  Jan Nijtmans  <[email protected]>

Tcl expressions differ from C expressions in the way that
operands are specified.  Also, Tcl expressions support
non-numeric operands and string comparisons, as well as some
additional operators not found in C.
.SS OPERANDS
.PP
A Tcl expression consists of a combination of operands, operators,
parentheses and commas.
White space may be used between the operands and operators and
parentheses (or commas); it is ignored by the expression's instructions.
Where possible, operands are interpreted as integer values.
Integer values may be specified in decimal (the normal case), in binary
(if the first two characters of the operand are \fB0b\fR), in octal
(if the first two characters of the operand are \fB0o\fR), or in hexadecimal
(if the first two characters of the operand are \fB0x\fR).  For
compatibility with older Tcl releases, an octal integer value is also
indicated simply when the first character of the operand is \fB0\fR,

.CE
.PP
The executor will search for \fBtcl::mathfunc::sin\fR using the usual
rules for resolving functions in namespaces. Either
\fB::tcl::mathfunc::sin\fR or \fB[namespace
current]::tcl::mathfunc::sin\fR will satisfy the request, and others
may as well (depending on the current \fBnamespace path\fR setting).
.PP
Some mathematical functions have several arguments, separated by commas like in C. Thus:
.PP
.CS
\fBexpr\fR {hypot($x,$y)}
.CE
.PP
ends up as
.PP
.CS
tcl::mathfunc::hypot $x $y
.CE
.PP
See the \fBmathfunc\fR(n) manual page for the math functions that are
available by default.
.SS "TYPES, OVERFLOW, AND PRECISION"
.PP
All internal computations involving integers are done calling on the
LibTomMath multiple precision integer library as required so that all